716 Chapter 12 | Gears Gear Subassembly Gear 2 Number of teeth = 80 PD = 160 Module = 2.0 Pressure angle = 20° Gear 1 Number of teeth = 30 PD = 60 Module = 2.0 Pressure angle = 20° Figure P12-10G Shaft, Output P/N SH-4003 Steel Figure P12-10H Shaft, Input P/N SH-4004-A Steel Figure P12-10I
Chapter 12 | Gears 717 Shaft, Neutral P/N SH-4002 Steel Figure P12-10J Figure P12-10K Exploded Isometric Drawing
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719 • Learn how to create sheet metal drawings • Learn about sheet metal gauges • Understand sheet metal terminology 13 chapterthirteen Sheet Metal Drawings CHAPTER OBJECTIVES Introduction This chapter explains how to create sheet metal drawings. Gauges for sheet metal are presented along with bend radii, flanges, tabs, reliefs, and flat patterns. Sheet Metal Drawings Figure 13-1shows a 3D solid model of a sheet metal part and a dimensioned orthographic drawing of that part. The orthographic drawing was created from the 3D model. The following sections explain how to create the 3D sheet metal drawing. EXERCISE 13-1 Creating a 3D Sheet Metal Drawing ! Create a new drawing using the Sheet Metal (mm).ipt format. See Figure 13-2 . The Sketch panels will appear. See Figure 13-3 . Sheet metal drawings are initiated as 2D sketches, then developed using a combination of Sketch and Sheet Metal panel tools.
720 Chapter 13 | Sheet Metal Drawings @ Click the Create 2D Sketch tool, select the XY plane, and use the Two Point Rectangle tool and draw a 20 3 50 rectangle. # Move the cursor into the area of the ViewCube and click the icon that looks like a house (the Home tool). See Figure 13-3 . 1. Click Metric 2. Click here 3. Click here Figure 13-2 Figure 13-1
Chapter 13 Chapter 13 | Sheet Metal Drawings 721 @ Select the Sheet Metal Defaults option located on the Setup panel under the Sheet Metal tab. The Sheet Metal Defaults dialog box will appear. See Figure 13-5 . The Sheet Metal Defaults dialog box is used to define the thickness, material, and bend characteristics of the part. EXERCISE 13-2 Adding Thickness ! Right-click the mouse again and select the Finish 2D Sketch option. The Sheet Metal panels will appear. See Figure 13-4 . Not all tools will be active at this time, but they will become active as the drawing progresses. Click here. Figure 13-4 Sheet Metal tool panel Click for a list of available materials. No check mark Figure 13-5 Create a 2D sketch Figure 13-3
722 Chapter 13 | Sheet Metal Drawings Inventor has many default values already in place. Figure 13-5shows that the default thickness is 0.500 mm. Sheet metal is manufactured in standard thicknesses. Figure 13-6is a partial listing of available standard sheet metal thicknesses in inches, and Figure 13-7is a partial listing of sheet metal thicknesses in millimeters. Figure 13-5lists 0.500 mm as a standard thickness, so this default value will be used for this example. Click the check mark in the Use Thickness from Rule box. There should be no check mark in the box. Set the Material Style for Aluminum-6061. Inches Figure 13-6 Millimeters Figure 13-7
Chapter 13 Chapter 13 | Sheet Metal Drawings 723 # Accept the 0.500 mm Thickness value, then click OK. $ Select the Face tool from the Create panel located under the Sheet Metal tab. % Select the sketch, and click OK. The 20 3 50 panel will now have a thickness of 0.50. See Figure 13-8 . 0.50 thickness Click Face Click here Figure 13-8 Bend Radii As sheet metal is bent, the inside surface is subjected to compression, and the outside surface to tension. These forces cause the material to stretch slightly. To edit the bend radius for a sheet metal part access the Style and Standard Editor dialog box by first clicking the Edit Sheet Metal Rule box located on the Sheet Metal Defaults dialog box. See Figure 13-9 . The Relief Depth and Minimum Remnant values shown on the Style and Standard Editor dialog box are calculated based on the thickness value specified in the Sheet Metal Defaults dialog box. This defines the Relief Depth as 0.50 mm. The default values for Bend Radius and Relief Shape will be accepted for this example. ! Click the Done box. NOTE Reliefs are added to bends in sheet metal parts to prevent tearing as the bend is created. The Sheet Metal Defaults dialog box will appear.
724 Chapter 13 | Sheet Metal Drawings Click the Bend tab Accept the default values Click here Figure 13-9
Chapter 13 Chapter 13 | Sheet Metal Drawings 725 @ Click the Cancel box. (No changes were made to the bend parameters.) Flanges A flange is a rim formed on the edge of sheet metal for strength. ! Right-click the mouse and select the Flange tool. The Flange dialog box will appear. See Figure 13-10 . flange: A rim formed on the edge of sheet metal for strength. Flange 2. Click the lower edge 3. Click Apply and then Cancel 1. Set flange length Flip Direction Default value Figure 13-11 Right-click the mouse and select the Flange tool. Figure 13-10 @ Set the length of the flange for 20 mm, accept the 90.0° Flange Angle, and select the lower rear edge of the sketch. The lower edge was chosen because the flange total height is to be 20 mm. If the upper edge was chosen, the total height would be 20.5, the flange height plus the material thickness. Figure 13-11shows the flange orientation resulting from edge selection.
726 Chapter 13 | Sheet Metal Drawings # Use the Flip Direction button to change the flange orientation if necessary. $ Click Apply and then Cancel. Figure 13-12shows the resulting flange. Create a New sketch plane on the top-edge surface Figure 13-13 A tab Relief tab: A feature similar to a flange but that does not run the entire length of the edge. Figure 13-12 Tabs Tabs are similar to flanges, but tabs do not run the entire length of the edge, as flanges do. Tabs are created using a new sketch plane, and the Two Point Rectangle tool located under the Sketch tab. See Figure 13-13 . ! Zoom the part so that the top-edge surface is identifiable; select the top-edge surface of the vertical flange, right-click the mouse, and select the New Sketch option. @ Use the Two Point Rectangle tool located on the Draw panel under the Sketch tab to extend from the edge of the vertical flange as shown. # Use the Dimension tool to size and locate the tab in accordance with the dimensions given in Figure 13-13 .
Chapter 13 Chapter 13 | Sheet Metal Drawings 727 $ Right-click the mouse and select the Finish 2D Sketch option. % Select the Face tool, and define the tab as the Profile. ^ Select OK. Figure 13-13shows the resulting tab. Reliefs Reliefs are cut out in material to allow it to be bent. If the material were not relieved, it would tear uncontrollably as the bend was formed. Inventor’s default relief value is equal to the thickness of the sheet metal material. Figure 13-13shows the relief that was automatically created as the tab was formed. Holes Holes are added to sheet metal parts in the same manner as they are added to 3D models. See Figure 13-14 . relief: An area cut out of material to allow it to be bent. Right-click the mouse and click New Sketch Locate a point on the tab Create a Ø5 hole Figure 13-14
728 Chapter 13 | Sheet Metal Drawings ! Create a new sketch plane on the top surface of the tab. @ Use the Point, Center Point tool to define a center point. # Use the Dimension tool to dimension the center point location. $ Right-click the mouse, and select the Finish 2D Sketch option. % Use the Hole tool on the Modify panel under the 3D Model tab panel to create the hole. In this example a Ø5.00 hole was created located 5 from each edge of the tab. Corners Both internal and external corners are created using the Corner Round tool found on the Sheet Metal panel bar. ! Click the Corner Round tool on the Modify panel under the Sheet Metal tab. @ The Corner Round dialog box will appear. See Figure 13-15 . 1. Click the Corner Round tool. 2. Define the radius. Preview 3. Select a corner Select a second corner Figure 13-15
Chapter 13 Chapter 13 | Sheet Metal Drawings 729 # Set the Radius value for 5 mm. $ Select the two outside corners of the tab. % Click OK. Figure 13-15shows the resulting rounded tab. Cuts Cuts may be any shape, other than a hole, that passes through the sheet metal. In this example a rectangular shape is used. See Figure 13-16 . New Sketch Plane 1. Click here 3. Click OK 2. Identify profile Cut rectangle Figure 13-16 Apply corner round
730 Chapter 13 | Sheet Metal Drawings ! Reorient the part and create a new sketch plane and sketch a rectangle as shown. Use the Dimension tool to size and locate the rectangle. @ Right-click the mouse and select the Finish 2D Sketch option. The Sheet Metal panel bar will appear. # Select the Cut tool from the Modify panel. The Cut dialog box will appear. $ Select the rectangle as the Profile. % Ensure that the direction of the cut is correct, and click the OK box. The rectangular area will be removed. The depth of the cut will automatically be set for the thickness value. ^ Select the Corner Round tool and set the Radius value for 2 mm. & Select the four inside corners of the rectangular cut. * Click the OK button on the Corner Round dialog box. Cuts Through Normal Surfaces Normal surfaces are surfaces that are perpendicular to each other. Cuts in normal sufaces are made by making intersecting cuts in both surfaces. See Figure 13-17 . ! Create a new sketch plane on the vertical flange as shown, and sketch a rectangle. Ensure that the rectangle extends beyond the rounded edge of the surface. @ Use the Dimension tool to locate and size the rectangle. # Right-click the mouse and select the Finish 2D Sketch option. $ Use the Cut tool to remove the rectangle. % Create another new sketch plane on the horizontal flange, and use the Dimension tool to size and locate the rectangle. ^ Right-click the mouse and select the Finish 2D Sketch option. & Click the Cut tool. The Cut dialog box will appear. * Click the Cut Across Bend box, then click OK.
Chapter 13 Chapter 13 | Sheet Metal Drawings 731 Right-click mouse and click New Sketch Extend the rectangle beyond the edge of the part Tab Ensure the Cut Across Bend tool is on Use the Cut tool and remove the rectangularshaped material Create and cut a second rectangular shape Figure 13-17 Finished cut
732 Chapter 13 | Sheet Metal Drawings Hole Patterns A hole pattern is created from an existing hole. See Figure 13-18 . Locate a point Use the Hole tool to create a Ø2.00 hole Ø2 Enter input values Direction 2 Direction 1 Feature Rectangular hole pattern Figure 13-18 ! Create a new sketch plane on the horizontal flange. @ Use the Point, Center Point tool and create a hole on the flange. # Use the Dimension tool to locate the center point.
Chapter 13 Chapter 13 | Sheet Metal Drawings 733 $ Right-click the mouse and click the Finish 2D Sketch option. % Click the Hole tool on the Sheet Metal panel. The Hole dialog box will appear. ^ Set the Termination for Through All and the hole’s diameter for 2. & Click OK. The dimensions for the hole come from the dimensions given in Figure 13-1 . * Click the Rectangular tool located on the Pattern panel under the Sheet Metal tab. The Rectangular Pattern dialog box will appear. ( Define the Ø2 hole as the Feature. ) Click the arrow under the Direction 1 heading, then the top front edge of the part. Use the Flip Direction button to change direction if necessary. _ Set the number of holes under Direction 1 for 4 and the spacing for 8 mm. + Click the arrow under the Direction 2 heading, and click the left front edge of the part to define the direction. | Set the number of holes for 2 and the distance for 8 mm. ` Click OK. Flat Patterns Flat patterns of 3D sheet metal parts can be created using the Flat Pattern tool. See Figure 13-19 . Click the Create Flat Pattern tool. Figure 13-19 Flat Pattern
734 Chapter 13 | Sheet Metal Drawings ! Click the Flat Pattern tool. A flat pattern will automatically be created. Punch Tool The Punch Tool is used to create various shapes in sheet metal parts. Because sheet metal parts are thin, many shapes are created by punching through the material. Sheet metal is placed in a press and a tool with the desired shape is inserted. The press then presses down quickly, piercing the sheet metal with the punch tool to create the desired shape. To Use the Punch Tool ! Draw a 4-in. 3 6-in. rectangle using the Sheet Metal (in).ipt format. It is presented in an isometric orientation. See Figure 13-20 . Dimensions are in inches Figure 13-20 @ Right-click the mouse and select the Finish 2D Sketch option. # Click the Sheet Metal Default tool; set the Thickness for 0.1019 (#10 gauge) and the Material Style for Steel, Mild. Click OK. $ Click the Face tool. There is only one shape on the screen, so the Face tool will automatically select the rectangle as the profile. See Figure 13-21 . % Click OK.
Chapter 13 Chapter 13 | Sheet Metal Drawings 735 ^ Right-click the front surface of the rectangular part and create a new sketch plane. & Use the Point, Center Point tool and the Dimension tool and locate a center mark 1.25 from the left edge and 2.00 from the top edge. * Right-click the mouse and select the Finish 2D Sketch option. See Figure 13-22 . 1. Click here 4. Click OK 2. Set the thickness value 3. Select the material Figure 13-21 Create a New Sketch and create a part. Figure 13-22 ( Click the Punch Tool on the Sheet Metal panel bar. The PunchTool Directory dialog box will appear. See Figure 13-23 . 1. Click Punch Tool 2. Click obround Preview 3. Click open Figure 13-23
736 Chapter 13 | Sheet Metal Drawings ) Select the obround punch and click Open. The PunchTool dialog box will appear. See Figure 13-24 . Click this tab Preview Figure 13-24 _ Click the Geometry tab and set the Angle value for 90 ° . See Figure 13-25 . 1. Enter the value Note that the slot has rotated 2. Click this tab Figure 13-25 + Click the Size tab and set the length and width values for 1.25 and 0.75, respectively. See Figure 13-26 . NOTE The length and width values must conform to the standard sizes listed under the arrowheads. Random values are not allowed.
Chapter 13 Chapter 13 | Sheet Metal Drawings 737 | Click Finish. See Figure 13-27 . ` Create another new sketch plane on the front surface of the rectangular part and locate a center mark 3.00 from the left edge and 2.00 from the top edge. 1 Right-click the mouse and select the Finish 2D Sketch option. See Figure 13-28 . 1. Set the width and length values 2. Click Finish Figure 13-26 Figure 13-27 Finished obround punch Create a new point Figure 13-28
738 Chapter 13 | Sheet Metal Drawings 2 Click the Punch Tool and select the keyhole.ide option. Accept the default values and click Finish. See Figure 13-29 . 1. Select the keyhole option Preview 2. Click Open Locate keyhole Click Finish Figure 13-29 Keyhole
Chapter 13 Chapter 13 | Sheet Metal Drawings 739 3 Create and locate a center mark 1.25 from the right edge and 2.00 from the top edge. See Figure 13-30 . 1. Select Square Emboss Preview 2. Click Open Figure 13-31 Preview 2. Click Finish 1. Enter new Length value Locate a new point Figure 13-30 4 Access the PunchTool Directory, select the Square Emboss option, and click Open. The PunchTool dialog box will appear. See Figure 13-31 .
740 Chapter 13 | Sheet Metal Drawings 5 Change the Length value to 1.50. 6 Click Finish. Figure 13-32shows the finished rectangular part. Shape created using the Punch Tool Figure 13-32
Chapter 13 | Sheet Metal Drawings 741 Chapter Summary This chapter defined and illustrated how to create sheet metal drawings from 3D models and orthographic drawings. Features of sheet metal parts such as bend radii, flanges, tabs, and reliefs were presented, and flat patterns were created. The use of the Punch Tool was also illustrated. Chapter Test Questions Multiple Choice Circle the correct answer. 1. How thick is a piece of #12 gauge sheet metal? a. 0.4600 in. c. 0.0571 in. b. 0.0808 in. d. 0.0050 in. 2. How thick is a piece of #30 gauge sheet metal? a. 0.1443 in. c. 0.0100 in. b. 1/8 in. d. 0.0031 in. 3. The thickness of a piece of sheet metal is defined using which tool? a. Sheet Metal Defaults c. Fold b. Face d. Hem 4. A small piece of bent material that does not run the entire length of an edge is called a a. Flange c. Relief b. Tab d. Contour 5. Which of the following materials is not available in the Material option of the Sheet Metal Defaults dialog box? a. Steel, Mild c. Brass, Soft b. Aluminum-6061 d. Plexiglas True or False Circle the correct answer. 1. True or False: In the English unit system the higher the sheet metal gauge number, the thinner the material. 2. True or False: A cut made next to a tab to allow for smooth bending is called a relief. 3. True or False: As sheet metal is bent, the inside surface is subjected to compression, and the outside surface to tension. 4. True or False: Normal surfaces are surfaces located 60° apart. 5. True or False: Punch tools can be used to create slots and keyholes. 13chapterthirteen
742 Chapter 13 | Sheet Metal Drawings Chapter Projects Project 13-1: Redraw the sheet metal parts in Figures P13-1Athrough P13-1Fusing the given dimensions. Use the default values for all bend radii and reliefs. Object is symmetrical about the centerline. Figure P13-1A MILLIMETERS 13chapterthirteen
Chapter 13 | Sheet Metal Drawings 743 Figure P13-1B INCHES
744 Chapter 13 | Sheet Metal Drawings Figure P13-1C INCHES
Chapter 13 | Sheet Metal Drawings 745 Figure P13-1D MILLIMETERS
746 Chapter 13 | Sheet Metal Drawings Figure P13-1E MILLIMETERS
Chapter 13 | Sheet Metal Drawings 747 60° Object is symmetrical about the vertical centerline. Figure P13-1F MILLIMETERS
748 Chapter 13 | Sheet Metal Drawings Project 13-2: Inches Design and draw a box similar to that shown that has a capacity of A. 100 cubic centimeters and is a cube. B. 4 fl uid ounces. C. 100 cubic centimeters and is rectangular with the length of one side 2 times the length of the other. D. 125 cubic inches and is a cube. E. 125 cubic inches and is rectangular with the length of one side 1.5 times the length of the other. F. 8 fl uid ounces. Figure P13-2
Chapter 13 | Sheet Metal Drawings 749 Project 13-3: Inches Draw the sheet metal part shown in Figure P13-3 . The part is made from #16 gauge mild steel. Use the following values for the Punch Tool shapes. The Round Emboss: Height = 0.125 Diameter = 1.250 Angle = 30° The Slot (obround): Length = 1.50 Width = 0.50 The Curved Slot: Outer radius = 0.625 Inner radius = 0.250 Angle = 180° Figure P13-3
751 • Understand how to design and draw weldments • Learn about fillet and groove welds • Learn how to create weld symbols Weldment Drawings CHAPTER OBJECTIVES Introduction Weldments are assemblies made from several smaller parts that have been welded together. Weldments are often less expensive to manufacture because they save extensive machining time or replace expensive castings. Fillet Welds Figure 14-1shows a simple weldment. It was created from two 0.375-in. thick plates and joined by a fillet weld. The base plate is 2.00 3 4.00 in., and the vertical plate is 1.25 3 4.00 in. Both parts are made from lowcarbon steel. EXERCISE 14-1 Creating the Components ! Click the New tool, then the English tab, Weldment (ANSI).iam, and Create. @ Click the Assemble tab and click the Create tool located on the Component panel. The Create In-Place Component dialog box will appear. See Figure 14-2 . weldment: An assembly made from several smaller parts that have been welded together. fillet weld: A weld usually created at 45° to join pieces that are perpendicular to each other; may be continuous or intermittent. 14 chapterfourteen
752 Chapter 14 | Weldment Drawings 2. Click here 1. Click English 3. Click here 4. Enter Part name 5. Click here to access the Browser templates Figure 14-2 Figure 14-1 # Define a new component named BASE,WELD. $ Click the Browse Templates box. The Open Template dialog box will appear. See Figure 14-3 .
Chapter 14 Chapter 14 | Weldment Drawings 753 % Select the Standard (in).ipt format. Click OK. The Create In-Place Component dialog box will reappear. Note that English\Standard (in).ipt is the new template. See Figure 14-4 . Click here Click here Figure 14-3 Template Click here Figure 14-4 ^ Click OK. A small icon will appear next to the cursor. & Click the drawing screen. The Sketch tab tools will appear. * Click the Create 2D Sketch tool, select the XY plane, and sketch a 2.00 3 4.00 rectangle. ( Right-click the mouse and click Finish 2D Sketch. The 3D Model tab tools will appear. ) Click the Extrude tool and define a thickness of 0.375 for the rectangle. See Figure 14-5 .
754 Chapter 14 | Weldment Drawings EXERCISE 14-2 Creating a Second Plate ! Right-click the mouse and select the Finish Edit option. See Figure 14-6 . Right-click the mouse and click Finish Edit Figure 14-6 @ Select the Copy tool. See Figure 14-7 . The Copy Components: Status dialog box will appear. Set thickness value Click here Figure 14-5
Chapter 14 Chapter 14 | Weldment Drawings 755 # Click the BASE,WELD:1 component. The component file name will appear in the dialog box. $ Click Next. The Copy Components: File Names dialog box will appear. See Figure 14-8 . 3. Click the component 1. Click tab 2. Click Copy 4. Click Next The name of the component to be copied will appear. Figure 14-7 The copied component will be assigned a new file name. In this example the new name is BASE,WELD_CPY.ipt. Another name may be entered. % Click the Increment box and remove the check mark. Click the OK box. The component copy will appear on the screen. See Figure 14-9 . Name of copied component; it may be edited. No check mark Figure 14-8
756 Chapter 14 | Weldment Drawings EXERCISE 14-3 Creating a T-Bracket ! Right-click BASE,WELD_CPY in the browser box and click the Grounded option. See Figure 14-10 . This will remove the grounded constraint. The pushpin icon will disappear from the browser box. The original: Base,Weld The copy: Base,Weld_cpy Figure 14-9 1. Right-click here Click here. There should be no check mark. Figure 14-10
Chapter 14 Chapter 14 | Weldment Drawings 757 @ Use the Constrain tool and assemble the two plates to form a T-bracket. See Figure 14-11 . # Right-click the mouse and select the Finish Edit option. EXERCISE 14-4 Creating the Welds ! Click the Welds tool on the Process panel under the Weld tab. See Figure 14-12 . The Weld panel tools will appear. (The Weld panel can also be accessed by double-clicking the Welds heading in the browser box.) T-bracket Figure 14-11 @ Click the Fillet tool on the Weld panel under the Weld tab. The Fillet Weld dialog box will appear. See Figure 14-13 . 1. Click Welds 2. Click Fillet Another option is to double-click here Figure 14-12 Preview Click here Enter a value Figure 14-13
758 Chapter 14 | Weldment Drawings # Set the weld size to 0.125, as shown. $ Click the 1 box, then click the top of the part BASE,WELD. % Click the 2 box, then click the front vertical surface of the part BASE,WELD_CPY. A preview of the weld will appear as small right triangles. See Figure 14-13 . ^ Click OK. Figure 14-14shows the finished weld. Intermittent Fillet Welds Fillet welds may be located intermittently along a weld line. ! Rotate the T-bracket created in the previous section so that the side opposite the fillet weld is expanded. @ Click the Fillet tool on the Weld panel. The Fillet Weld dialog box will appear. See Figure 14-15 . # Enter the appropriate Intermittency values. Note that the values 1.00 and 1.50 have been entered in the Intermittency box. The 1.00 value is the length of each weld, and the 1.50 value is the distance from the center of one weld to the center of the next. $ Define surfaces 1 and 2 as before. % Click Apply. Figure 14-16shows the finished intermittent welds. Finished weld Figure 14-14 The length of the weld Intermittent Fillet Welds The distance from the center of one weld to the center of another Figure 14-15 Finished welds Figure 14-16
Chapter 14 Chapter 14 | Weldment Drawings 759 Weld Symbols Welds are defined on drawings using symbols. The symbol for a fillet weld is shown in Figure 14-17 . Note that the location of the flag-like portion of the symbol defines the location of the weld. It is not always possible to point directly at a weld location, so the Other side symbol is very useful. Symbols for fillet welds Define the weld size here. Arrow side Other side Both sides Figure 14-17 The size of the weld is defined as shown. Most fillet welds are created at 45°, although other angles are possible. A fillet weld defined by .25 indicates that the 45° weld is defined by two sides, both .25 long. Metric values are used to define a weld size in the same manner. EXERCISE 14-5 Adding a Weld Symbol to a Drawing This example will use the T-bracket shown in Figure 14-11 . ! Start a new drawing using English units and the Weldment (ANSI) .iam format. @ Click the Assemble tab, select the Place Component tool on the Component panel, and locate the T-bracket on the drawing screen. # Rotate the T-bracket so that the portion of the bracket that does not have a weld is visible. See Figure 14-18 .
760 Chapter 14 | Weldment Drawings $ Click the Weld tool, click the Fillet tool, and add a .125 fillet weld; click OK. % Click the Symbol tool located on the Weld panel. The Welding Symbol dialog box will appear. See Figure 14-19 . ^ Enter the .125 value, click the Bead box, and click the fillet weld on the T-bracket. The weld symbol will appear. & Click OK. Figure 14-19shows a weld drawing with a weld symbol. The weldment has been reoriented to better show the weld symbol. 1. Click here Symbol 3. Click Bead 5. Click OK 4. Enter value 2. Click Bead Figure 14-18 NOTE The fillet weld and symbol can be created together by first clicking the Create Welding Symbol box on the Fillet Weld dialog box. When the box is clicked the Fillet Weld dialog box will expand to include welding symbols. Figure 14-20shows the fillet weld symbol for an intermittent fillet weld. It was created using the same procedure as for the continuous weld.
Chapter 14 Chapter 14 | Weldment Drawings 761 3. Click Bead (fillet weld) Click OK Weld from previous example 2. Click Bead box 1. Enter value Weld symbol Click here to expand the dialog box. Weld symbol area Figure 14-19 Enter values. Enter the value. Figure 14-20
762 Chapter 14 | Weldment Drawings All Around The addition of a circle to the fillet weld symbol indicates that the weld is to be placed all around the object. Figure 14-21shows a cylinder welded to a plate. In this example the fillet weld was defined using millimeters. A 5-mm 3 5-mm weld is to be created all the way around the cylinder. Click to create the circle. Surface 1 Define surfaces 1 and 2. Surface 2 Preview Enter values. Enter the value. Check mark for expanding the dialog box Figure 14-21 EXERCISE 14-6 Creating an All-Around Fillet Weld ! Start a new drawing, click the Metric tab, and create a new drawing using the Weldment (ISO).iam format. @ Create a 5 3 40 3 40-mm plate and a \20 3 30 cylinder. # Assemble the parts so that the cylinder is centered on the plate. $ Click Welds in the browser box, then click the Fillet Weld tool on the Weld panel. The Fillet Weld dialog box will appear. See Figure 14-21 . % Set the weld size for 5 3 5 mm, then click the Create Welding Symbol box. ^ Enter a fillet weld value of 5. & Click the box at the right end of the horizontal segment of the symbol arrow, where the arrow symbol changes direction, to create a circle around the bend in the arrow. * Click OK. Figure 14-22shows the finished weld and symbol.
Chapter 14 Chapter 14 | Weldment Drawings 763 Weldments—Groove Welds Groove welds are used when two parts abut. A chamfer is cut into each part and the weld is placed in the resulting groove. Figure 14-23shows an L-bracket created as a weldment. It was created as follows. ! Draw a .375 3 2.00 3 4.00-in. plate and cut a .19 3 .19 chamfer as shown. @ Create a weldment drawing using the Weldment (ANSI).iam format. groove weld: A weld used when two parts abut, placed in the groove formed when a chamfer is cut into each part. Finished all-around weld and symbol Figure 14-22 .19 x .19 Chamfer .375 x 2.00 x 4.00 Plate Create two plates and assemble them as shown. Use the Weldment (ANSI). .iam format 2. Click Face Set 1 4. Click Face Set 2 3. Click Face 1 Preview 1. Click Full Face 6. Click OK Weld boxes 5. Click Face 2 Groove weld Figure 14-23
764 Chapter 14 | Weldment Drawings # Click the Assemble tab, click the Place Component tool located on the Component panel, and add the two plates to the drawing. Use the Contsrain tool and assemble the plates as shown. $ Click the Weld tab, click the Welds tool, and click the Groove Weld tool on the Weld panel. The Groove Weld dialog box will appear. % Click the Full Face Weld boxes for both Face Set 1 and Face Set 2. ^ Define Face 1 and Face 2 as shown . & Click OK. Sample Problem SP14-1 Figure 14-24shows an object that is to be manufactured as a weldment created from three parts. The three parts are the barrel, the center plate, and the front plate. Manufacture this part as a weldment. Figure 14-24 EXERCISE 14-7 Creating the Weldment Use the Weldment (ISO).iam format. The dimensions for each part were derived from those given in Figure 14-24 . ! Start a new drawing, click the Metric tab, and use the Weldment (ISO).iam format. @ Use the Create tool (use the Standard (mm).ipt format) and create a 15 3 55 3 110 plate with a 5 3 5 chamfer and a \15 as shown. # Right-click and select the Finish Edit option.
Chapter 14 Chapter 14 | Weldment Drawings 765 15 x 55 x 110 Plate O15 Hole 5 x 5 Chamfer O46 x 35 Barrel O16 Hole through all Groove weld 5 x 5 Fillet weld 2 x 2 Fillet weld $ Use the Create tool and create a \46 3 35 barrel with a \16 through-all hole. Use the Constrain tool to position the barrel. % Reorient the model and use the Create tool to create a 20 3 55 3 35 flange with a 25 3 20 cutout as shown. ^ Add a groove weld as shown. & Add a 5 3 5 fillet weld as shown. * Add a 2 3 2 fillet weld around the barrel as shown. Figure 14-25shows the weldment. Figure 14-25
766 Chapter 14 | Weldment Drawings Chapter Summary This chapter illustrated how to create and draw weldments, which are assemblies of several parts welded together. Fillet welds, both continuous and intermittent as well as all around, were introduced; welding symbols were added to drawings; and groove welds were illustrated. Chapter Test Questions Multiple Choice Circle the correct answer. 1. What shape is the symbol for a fillet weld? a. Circle c. Square b. Flag-like d. Hexagon 2. A circle added to the fillet weld symbol means a. Weld all around b. Use a round weld bead c. Use a cosmetic weld 3. Groove welds are generally associated with a. Fillets c. Chamfers b. Holes d. Cutouts 4. The weld tools are accessed by clicking the Welds tool located in the a. Weldment Assembly Panel c. Tools pull-down menu b. Standard toolbar d. Browser 5. A weld symbol that has a symbol both above and below the horizontal segment of the symbol indicates a. Weld the other side c. Weld all around b. Weld both sides d. Weld the closest side True or False Circle the correct answer. 1. True or False: A weldment is an assembly made from several smaller parts that have been welded together. 2. True or False: Inventor can draw both continuous and intermittent welds. 3. True or False: The symbol for a fillet weld is a circle. 4. True or False: A groove weld is used when two parts abut. 5. True or False: Fillet welds can be defined in two ways: by two edge distances or the distance from front to back. 14chapterfourteen